Stay updated with real-time air quality in Pekin, Illinois featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
49
Good
Pekin, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.69 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
39.44 μg/m³
0
55
155
255
425
605+
36.95 ppb
0
55
71
86
201
201+
0.94 ppb
0
36
76
186
605
1005+
4.30 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Pekin, Illinois
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AQI 33
Good
6.06μg/m³
PM2.5
26.96μg/m³
PM10
34.04ppb
O3
0.74ppb
SO2
4.27ppb
NO2
0.20ppm
CO
AQI 33
Good
6.01μg/m³
PM2.5
27.00μg/m³
PM10
34.08ppb
O3
0.73ppb
SO2
4.27ppb
NO2
0.20ppm
CO
AQI 33
Good
6.28μg/m³
PM2.5
25.06μg/m³
PM10
34.09ppb
O3
0.72ppb
SO2
4.32ppb
NO2
0.20ppm
CO
AQI 33
Good
6.26μg/m³
PM2.5
26.51μg/m³
PM10
34.02ppb
O3
0.71ppb
SO2
4.30ppb
NO2
0.20ppm
CO
AQI 38
Good
6.80μg/m³
PM2.5
40.36μg/m³
PM10
35.10ppb
O3
0.80ppb
SO2
3.36ppb
NO2
0.20ppm
CO
AQI 44
Good
7.67μg/m³
PM2.5
33.15μg/m³
PM10
36.01ppb
O3
0.61ppb
SO2
4.46ppb
NO2
0.21ppm
CO
The air quality data for Illinois, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Pekin, Illinois are available every hour.
Pekin, Illinois experienced its worst air quality at 11:00:00, 2026-03-08.
The best air quality in Pekin, Illinois was observed at 02:00:00 on 2026-03-09.
The air quality in Pekin, Illinois right now is Good, with an AQI of 49.
In Pekin, Illinois, PM2.5 is the most frequently found pollutant.
When air quality in Pekin, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
Pekin, Illinois currently has a PM2.5 concentration of 8.689 μg/m3.
Pekin, Illinois currently has a PM10 concentration of 39.437 μg/m3.
The current carbon monoxide (CO) level in Pekin, Illinois is 0.229 ppm.
The current sulfur dioxide (SO2) concentration in Pekin, Illinois is 0.937 ppb.
Pekin, Illinois currently has an ozone (O3) concentration of 36.945 ppm.
The current level of nitrogen dioxide (NO2) in Pekin, Illinois is 4.298 ppb.
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